although, we are buying a new car in the next few months, might look out for middle seats with full belt (actually never knew you got cars with full belt in the middle bit, can you tell ive only ever had old bangers! )

we got one from halfords, sorry cant remember make. really worrying thing was that we asked for one for a lapbelt and the guy recommended one that was not suitable for lapbelts. even after dp pointed out the manufacturer said it wasnt suitable, he still insisted it was, so make sure you read the safety info with the seat.

britax rings a bell, is a nice seat. can recline or sit up and its easy to do from front of car. base looks really chunky but other kids fit in car with it fine, i think it just needs extra strength if it is only supported by lapbelt. it wasnt the most expensive we looked at, suspect that might be why guy in shop recomended other one - profits obviously more important than kids safety

We bought a Peugeot 307 SW which has a three-point seat belt for the middle seat. However, it comes down from the roof so can't be used with a car seat. Something to watch out for when you are looking at cars.

We've got a Nissan primera and Ds3 goes in the middle with a lap belt.

His car seat is the one we had for Ds1 and then ds2, it's just a Mothercare one so hasn't got a fancy name.
It works well though but like Rickman says it's takes alot of effort to get it tight, DH wouldn't have a clue how to fit it either.